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1.发明公开
公开(公告)号：EP4159711A1
公开(公告)日：2023-04-05
申请号：EP21944454.4
申请日：2021-08-30
发明人： HOU, Shuai , FU, Mingli , LI, Xiaolin , ZHU, Wenbo , HUI, Baojun , FENG, Bin , ZHANG, Yifan , ZHAN, Yunpeng , CHEN, Xiao , ZHANG, Bin , XU, Shu , WU, Guoxing
摘要： The present invention discloses a maleic anhydride modified voltage stabilizer, a preparation method, and use thereof, which belongs to the technical field of high voltage and insulation. The present invention discloses a maleic anhydride modified voltage stabilizer represented by Formula 1 and a preparation method thereof. (1) Maleic anhydride and 2,4-dihydroxybenzophenone are dissolved in tetrahydrofuran to obtain a mixture. (2) In a protective gas atmosphere, the mixture obtained in step (1) is added with a catalyst and stirred, centrifuged with added water, and an obtained precipitate is dried, thereby achieving the maleic anhydride modified voltage stabilizer. The present invention also provides the use of the maleic anhydride modified voltage stabilizer in a cross-linked polyethylene high voltage AC cable insulating material.
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2.发明公开
公开(公告)号：EP4290212A1
公开(公告)日：2023-12-13
申请号：EP21953957.4
申请日：2021-10-21
发明人： HOU, Shuai , FU, Mingli , JIA, Lei , ZHAN, Yunpeng , ZHU, Wenbo , HUI, Baojun , FENG, Bin , ZHANG, Yifan
IPC分类号： G01N11/14
摘要： The present invention relates to the technical field of high voltage and insulation and discloses a cross-linking performance consistency characterization method for 500 kV cross-linked polyethylene cable insulation material. The characterization method includes the following steps: (1) preparing a standard sample: fully stirring and mixing low-density polyethylene and dicumyl peroxide at 63-67°C, and standing to fully diffuse the dicumyl peroxide into the low-density polyethylene; (2) testing, by using a torque rheometer, a cross-linking reaction kinetic curve of the standard sample and a sample to be tested; and (3) eliminating, by using a standard sample transformation method, a difference introduced due to different test places into the cross-linking reaction kinetic curves of the sample. By using the method, cross-linking reaction properties of the 500 kV cross-linked polyethylene cable insulation material are effectively characterized, thereby solving the problem of accurate comparison of results at different test places.
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公开(公告)号：EP4431919A1
公开(公告)日：2024-09-18
申请号：EP21963818.6
申请日：2021-12-01
发明人： FU, Mingli , HOU, Shuai , LI, Xiaolin , ZHANG, Bin , ZHANG, Yifan , ZHU, Wenbo , HUI, Baojun , FENG, Bin , ZHAN, Yunpeng , CHEN, Xiao , XU, Shu , WU, Guoxing
IPC分类号： G01N21/84
摘要： Disclosed is a method for evaluating a degassing effect of a cross-linked polyethylene cable, comprising: acquiring a cable sample to be detected; heating the cable sample to be detected, so as to obtain a transparent cable sample to be detected in which an insulating layer of the cable sample to be detected is in a transparent state; under a darkroom condition, acquiring at least one light spot image of said transparent cable sample under irradiation of a monochromatic laser light source; extracting light intensity data of the at least one light spot image in a preset light spot image range; normalizing the light intensity data, and obtaining the maximum value and an average value of normalized light intensity coefficients of said transparent cable sample in a preset thickness range of the insulating layer; calculating a degassing uniformity coefficient according to the maximum value and the average value; and obtaining an evaluation result of the degassing effect of the cross-linked polyethylene cable according to the maximum value, the average value, and the degassing uniformity coefficient. By means of embodiments of the present invention, the degassing effect of the cross-linked polyethylene cable can be efficiently and quickly evaluated, and the accuracy is relatively high.
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